Online since 2002. The most comprehensive site for all around twisty puzzles.

5x5x5
Professor CuboctahedronA 5x5x5 truncated into a cuboctahedron.
Professor Cuboctahedron WindmillA Professor Windmill truncated into the shape of cuboctahedron which is an archimedean solid.
Professor Ghost CubeThe higher order brother of the Ghost Cube. Made from a 5x5x5.

Professor Greenhills OctahedronA 5x5x5 truncated and extended into the higher order equivalent of Greenhills octahedron.
Professor Hex PrismA 5x5x5 transformed into the shape of a hexagonal prism.
Professor Mirror BlockThis is a shape modification of a 5x5x5 cube that implements the same concept as the Bump Cube.

Professor QuintameseA bandaged 5x5x5 that simulates the Quintamese 5x5x5.
Professor Triangular PrismA 5x5x5 in shape of triangular prism.
Professor TruncatedA Rubiks 5x5x5 truncated on all eight corners. The truncation stopped halfway to a cuboctahedron.

Professor Windmill CubeA 5x5x5 twisted inside of its solid. Katzuhiko Okamoto's concept applied to a 5x5x5.
Pseudo 10x10x10A sticker scheme to create confusion. A 5x5x5, inspired by a 6x6x6 but stickered to resemble a 10x10x10.
Pseudo pocket 5x5x5A 5x5x5 partially covered with pieces.

Reuleaux UltramorphixA 5x5x5 in shape of a reuleaux tetrahedron.
Rhombicuboctahedral 5x5x5A 5x5x5 truncated on the edges and corners to create a shape closely related to the rhombicuboctahedron.
Rubik's 5x5x5Version by Rubiks.com from 2002


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